The date and time shown in visit details are always according to the browser timezone of the account creator. You can check the timezone of your Leadfeeder account by navigating to your settings:
STEP 1: Click your name on the right upper corner and select Integrations for... from the menu.
STEP 2: Timezone is displayed under Details.
STEP 3 OPTIONAL:
You can manually set your timezone in these settings if needed. Keep in mind this will have an effect on most of the dates presented in the interface (including visit times) and all the users that have access to this Leadfeeder website account. If you work with a company that crosses multiple time zones you may want to decide on one together.